Red Hat / Fedora :: Whole Cluster Freezes When One Of Nfs Server Freezes / Sort It?
Jun 27, 2011
We are having a cluster with couple of disk servers, compute nodes and a head node. Disk server is nfs mounted on all the compute and head nodes.
The problem is that if any of the disk servers hangs, it freezes rest of the cluster too which is dangerous. Ideally, cluster should not care about the hanged server and run without any problem except files from that server is not visible.
Is there any way I could avoid the problem of freezing cluster because of one hanged server?
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May 26, 2010
I've read some past issues with this and was wondering if anyone else has issues with F12 / F13.
When I logout of gnome or kde on a fresh install of Fedora 13 the panels disapear but I never receive the log on window. I cannot switch to command either the screen is locked completely.
I havn't run updates or anything, the install is nearly out of box except for the installation of kde.. The issue existed before I installed kde, I was hoping it didn't have this issue lol. fat chance of that..
Anyone aware of any fix's? Or what the issue is?
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Jul 8, 2011
I'm using 64-bit fedora 14 on my desktop. i was using gnuplot, but there was some power failure and my computer got shut down. now whenever i plot anything it freezes after first plot i have to force quit it
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Jan 22, 2010
I'm new to the Linux scene. My school computer has linux and it works great, and I'm trying to get into programming, so I figured it'd be good to switch over to Linux (plus I just got a new computer, so it's a good time).
But, I don't know much about how to install it. I've burned a live cd from sourceforge (actually 2: the newest version and one older). I shut off the computer and put the cd in the drive, and then when I turn my computer back on I get the expected menu. I choose my language, and then it brings me to a screen with a few options: "Try Ubuntu without any changes to your computer", "Install Ubuntu", "Check disc for defects", "Test Memory", and "Boot from first hard disk" (plus some options at the bottom of the screen). I've tried every option on the menu, with both cds, but whenever I select anything, it freezes up right away. I've let it sit for 15-20 minutes, and nothing happens, so I'm pretty sure it's not me being impatient
I've also put the disc in while windows is running. When I double-click on my D-drive (in my computer) I get the error message "No cd detected, cannot run cd menu".
I'd be content running a different version of linux, I'd just like to have linux running (although I want it separate from Windows, I don't want Wubi). I'd like to be able to dual-boot, but I'd be willing to give up Windows entirely too. So, any ideas? Anything I can try? Oh, and I'm pretty inexperienced at this, so ask me if you need more details, and please respond in basic terms
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May 15, 2010
After yesterday system update the x server won't start up anymore. It locks immediately with blank screen leaving the computer unresponsible until hard reboot. I hat to once again go with the "vesa" driver, as I mentoined earlier in another thread it is a life saver, always works. My video card is integrated Radeon HD3250 - video driver was fglrx from ATI itself. "radeon" driver now reports that modesetting is not supported and will not load with EE-type X server error.
Anyone else experienced this? Are there any changes in the most recent X server that once again break compatibility with the official ATI driver?
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Aug 14, 2009
I am new to do this. It is my first CentOS install. I burned the 6 ISO's from the site and installed onto a Dell Dimension 8200. At the very end of the graphical install (CD 6, 2 minutes left) it freezes. There is no error message, but the file it freezes on is: Installing Gnome-applet-vm-0.1.2-1.el5 i386 (113KB).
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Oct 30, 2009
I have two boxes that were originally used as workstations at a school - they upgraded and sold these.The two boxes are identical parts - Lenovo NetVista M42. I installed 5.3, installed RPMforge per the wiki instructions, did a yum -y update && shutdown -h now.The next day I turned the machine on and installed the UT2004 dedicated server. After a few hours I tried logging in via SSH - I could enter my user and password, but could not get farther. I rebooted the server. After another day the same thing happened. I moved the disk from the first box to the second and moved /etc/sysconfig/network-scripts/ifcfg-eth0.bak to ifcfg-eth0 but retaining the correct MAC address.
During this transition where the server "locks up" some things work and others do not. For example, if I type ping 4.2.2.2, wait 10 minutes and CTRL+C it looks like this (note the time of 0ms).
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Mar 5, 2011
I was wondering if and how it would be possible to put together a sort of Home "cluster" system. pecifically, I wanted to make it so I would have a central server and a few computers, where the central server holds the home folders and settings of each user, and each user can log in to any of the computers using a standardized login (into the server), where anyone could log in with their account on any of the few computers - and their home folder (Desktop, Documents, Music, etc) would automatically be there.
Also if possible, would there be some way to centralize the applications that show up on each "client"?
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May 31, 2011
I was trying to restart the X server with sudo /etc/init.d/gdm restart, and doing so brought me to a black screen with some messages I don't remember, and left me hanging like that. So I had to do a hard reboot. So now when booting I get to the ubuntu logo on the purple background and it just hangs like that. Doesn't accept keyboard input, I can't alt+d or ctrl+alt+f2. I edited the ubuntu line in the grub menu and removed quiet but that didn't do anything. How do I diagnose this?
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Feb 25, 2010
We're running
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4 (Tikanga)
$ uname -r
2.6.18-164.11.1.el5
It hosts an Apache/2.2.3 web server. We also run apache-tomcat-5.5.23. Most of our programs are mod_perl. Sometimes our users input over-sized data sets, or queries that generate too much output. (I realize that we should try to prevent them from doing that, but right now I'm looking for a more general solution.)
When a large job runs it can 'freeze' our system. The system becomes unresponsive to everything, including command line commands. Sometimes it unfreezes after a while. Once, in this situation I was able to create a high-priority shell. ps reported:
[Code]...
Observing the machine, I see at least one very busy disk. I suspect that some high priority system process (perhaps kswapd) is using all the cpus, preventing anything else from running. Unfortunately, I cannot find much info on kswapd, or debuggging this problem.
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May 11, 2010
I've changed the login configuration of Webmin in a way that it will block hosts for 1200 seconds after 8 failed login attempts and since then I can't login to Webmin anymore. I've tried stopping and starting Webmin via SSH, waiting a few hours before trying again, flushing the iptables configuration but all with no luck.
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Mar 15, 2011
I'm having a very strange problem with red hat cluster. After testing it in the lab, I tried to install a new cluster and received the following error: cman not started: Cannot start, cluster name is too long or other CCS error /usr/sbin/cman_tool: aisexec daemon didn't start I've checked the internet for that error, but nothing. I decided to to take the example from cluster.conf man, which looks like that :
[Code]...
And still I get the same error. I can find my servers both from DNS (FQDN and short name) and they also appear in /etc/hosts.
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Jun 16, 2009
I have a 11.1 NFS server and several 11.1 NFS clients. If for some reason the server shuts down before the clients then the clients become almost frozen, particularly KDE is rendered useless even after cycling back to init 3 then init 5. I would like to make the clients immune to shutdowns on the server.
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Jan 10, 2011
I m running redhat 5.5 server on dell poweredge R910 on which we have Kvm running with 3 virtual machines. Now the server gets freeze's up frequently making us to force restart the server again. We have gone through the logs and browsed on several forums with the related errors but couldn't find any solution and also have checked on redhat site but was of no help.
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Aug 1, 2009
Every now and again Fedora 11 just freezes. At first I thought it was Firefox but a couple of times I just had a text document open.
I have two boxes on one KVM switch and "tap-tap" the scroll lock key to switch between computers. Sometimes when switched back to Fedora box it is frozen. Nothing works and I must push the power button to get it to reboot.
What causes Fedora to freeze and is there something I can do about it?
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Dec 29, 2009
I have the latest packages installed with F11.when I go to site the FF freezes.Does this happen to anyone else?How can I find out what is wrong?
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Jun 27, 2010
I installed F13 and KDE desktop on my Intel processor.Problem is that when I am working on something, desktop freezes for 10 seconds, and than continues, but this happens every few minutes.On F12 i had a similar problem before i install Nvidia-Kmod, but now it didn't stop. Does anyone have an idea. My graphic card is Nvidia 8400GS
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Jul 8, 2011
I am using Fedora 15 64bit (GNOME 3). Everything is working fine and I'm really enjoying the new GNOME but when I use it for let's say a couple of hours, Gnome get's stuck.I'm able to move my mouse and music keeps on playing, but I can't click anything, drag windows or close a window.When I press ctrl+alt+F2 I can still enter a terminal. (by the way, how is it possible that the gnome-shell command uses 99.4-101% cpu without any noticeable lag on my system and a strong processor?)
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Aug 17, 2011
When I click logout under the user menu (top right), the confirmation dialogue appears, and I can click Logout. the dialogue disappears and it starts to logout normally... then it just stops. it freezes once the top toolbar disappears. my tint2 bar stays visable, as well as my desktop background, and i can move my cursor around, but it wont respond to my keyboard. After just letting it stay like that for a few minutes, nothing changes, it doesn't even dim the screen or go to sleep, it just sits there.
I can shutdown and switch users just fine, just not logout.
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Jul 8, 2010
Fedora 11 is constantly freezing after a few minutes up. I run memtest but couldn't complete the test becuase the machine keeps freezing during the test. All fans are working and the CPU's temperature is normal (around 49C), so I don't think it overheats or something. I really don't know what is happening.
I tailed the messages log: Code: tail -f /var/log/messages and waited for the machine to freeze again. A second before it froze I got the following message in the log.
avahi-daemon[1498]: Invalid response packet from host 10.0.0.78
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Apr 17, 2010
Installed fc12 on a pentium 4 - 3.2 gig cpu, 2 gig mem, 6 gig root, 2 gig swap and 12 gig home.
Install completed and on reboot it freezes near end of boot process. Install disk is good, install worked on a laptop.
How do I find the cause of the freeze?
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Feb 15, 2011
For some reason my disc I burned for ubuntu desktop 10.10 freezes when I get to the ubuntu logo with the 5 dots. I am able to install ubuntu server just fine.
I tried to install desktop on top of server using sudo aptitude install ubuntu-desktop and then whenever I reboot it freezes during startup.
I think it might be my swap partition. I recall seeing a blip of an error talking about "press C to skip or M to start maintenence" or something like that. It never stayed on the screen long enough for me to read it.
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Nov 24, 2009
I'm running VNC Server on CentOS5 on a brand new installation, this is for some of my students to use specific software via VNC on their machines from home that they otherwise don't have access to on their Windows machines. This has been working fine on our previous server for a few years but the hardware is now outdated so I have upgraded and put a fresh install of CentOS 5 on. This works fine for about 24 hours and then eventually one of the session ends up freezing where the user then can see everything on their session, the cursor can move but they cant click a single thing.
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May 5, 2009
I've tried this a couple different ways and I can't get it to work. Whenever I try to install from my F10 DVD, I get to the part where it asks if I want English or some other language. After I pick English and click Next, everything goes black except for my mouse which is frozen.
Specs:
Primary boot drive is blank, secondary has Win7
Using F10 x86_64 DVD
e6850
8800GTX
6GB RAM
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Jul 29, 2009
I did a fresh install of F11 and everything seemed OK until I started OpenOffice, the OpenOffice loading box shows up then Fedora freezes and I am forced to do a hard restart. I repeated this and it seems to be happening at random with the same default settings of a fresh install.
Has anyone else experienced the this?
I'm using OpenOffice 3.1.0, default settings.
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Nov 3, 2009
I installed fedora 11 64 bit without any problems in my laptop. But When I installed a visualization software (OpenFoam's paraview ), I am experiencing crashing issues. My computer totally freezes when clicking some buttons and I have to perform a forced reboot.
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Nov 26, 2009
Almost everyday my notebook freezes. I know the kernel is still up and running because I see my hd led activity lit from time to time and when I pressed the wifi/bluetooth button it also lit on and off with no problem.
The problem is my XWindows, it's just freezes and there's nothing I can do with it. I still can move my mouse cursor but I can't click anything because the screen is just freezes.
I tried to pressed Ctrl + Alt + F2->F5 to go into console mode. Not working.
The only workaround is turn-off and turn it on again.
This happened after I installed F11. with F10 I have never seen such problem
Here is my configuration :
- Notebook Acer Travelmate 6292
- 4 GB memory
- VGA is Intel on-board.
Sofware I uses when the freezes happened :
- Virtualbox 3.0.10
- I use compiz/emerald
- Gnome
- Firefox
- Limewire (sometimes)
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Dec 11, 2009
when I click "Firewall" a box comes up "firewall configuration startup" when I try to click 'close" nothing happens, I have to force quit the application, unable to make any changes to the firewall
I feel my fedora 12 expierence is going downhill fast, nothing is just working as it should
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Dec 19, 2009
I'm using x86_64 F12 on my dell inspiron 1440 laptop. My machine frequently freezes especially after suspending. Today, when I disabled the wireless connection, the machined freeze.
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Jun 1, 2010
Multiple install problems.
1. Installation freezes while looking for repositories. Have left overnight hoping installation would continue with no luck.
2. When it does find all the repositories it crashes with fatal error installing package XYZ. This could indicate errors when reading the installation media. Installation cannot continue.
Solutions tried.
1. First I though the download ISO was bad. Tested the ISO download with sha256sum checksum utility. Perfect download according to the checksum.
2. I tried 3 different DVD drives on system that Fedora is being installed to in hopes that maybe the DVD drive was bad.
3. I tried burning the ISO with two different DVD burners. One with windows 7 ISO burning utility. The other on windows XP using Nero 7.
4. Tried burning the disks at low speed to get a better burned disk.
5. I have tried 2 different brands of DVD disks
6. I have officially gone through 8 different DVD disks.
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